The Apollo mission was estimated to have had a $14 return for every $1 invested. But were they the same dollars? The incommensurable jumps in economics defy normal accounting methods, and Riemann's work on Abelian functions provide an insight into how such leaps can be conceptualized as the substance of economy, rather than as exceptions. This is a difficult topic -- questions and comments are welcomed below.

(This is the second half of a video. Please watch Riemann: Potential and Metaphor first.)